As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT AILERON, LOWER INBOARD FIXED LEADING EDGE SKIN IS CHAFED. C-CHECK RO 10/20/2020. BLENDED OUT CHAFE ON LT AILERON, LOWER INBOARD FIXED LEADING EDGE SKIN, IAW REO. FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED THE LOWER SKIN LEADING EDGE ON LT AILERON WITH NEW ONE P/N 601R13031-145, REF CRJ-200 SRM & DWG.